For anyone managing a SQL Server database, understanding permissions is critical to ensuring that only authorized users are able to view and modify data.
This article explains the different types of SQL Server permissions, including server-level and database-level user permissions, and provides guidance on how to manage them.
Microsoft SQL Server is a relational database management system (DBMS) that supports a wide variety of transaction processing, business intelligence and analytics applications in corporate IT environments. Microsoft SQL Server is one of the three market-leading database technologies.
SQL Server has three primary security components that enable DBAs and sysadmins to control which users can log onto the server, what data they have access to, and what operations they are permitted to carry out on that data. These components are:
Security principals — People or processes that are authorized to access a particular SQL Server instance
Securables — The server and database resources for which access is regulated
Permissions — The types of access that principals have to specific securables
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